virtqueue_notify(9)

💅 virtqueue_notify(9) — the Kernel API Manual glow-up 🎀

okay so bestie, welcome to the virtqueue_notify(9) page, straight out of the Kernel API Manual ✨. Sit down, grab a strawberry drink 🍓, and let's get into it — this one's short but she's mighty.

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✨ NAME ✨

virtqueue_notify — the second half of the virtqueue_kick call. like, literally the sequel. the part two. the and then what happened 💫

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🌸 SYNOPSIS 🌸

bool virtqueue_notify (struct virtqueue *_vq );

that's it. that's the whole signature. she's giving minimalism, she's giving main character energy 👑

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🦋 ARGUMENTS 🦋

• _vq — the struct virtqueue. your queue. your little guy. the whole vibe check happens on this one 🫶

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💖 DESCRIPTION 💖

okay so real talk: this function does not need to be serialized. no locking drama, no "wait your turn" energy, none of that — you can just call her 🙈✨

and here's the tea on the return value:

• it returns false if the host notify failed 😭 or if the queue is broken 💀
• otherwise it returns true — slay, the notify went through, we love a success story 👑

bestie pls note: false is the bad-vibes return. broken queue is not a drill. treat it accordingly 🔥

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🌈 SEE ALSO 🌈

the whole friend group 🫶 — and yes we're listing every single one of them, no cap:

kernel file ./drivers/virtio/virtio_ring.c

virtqueue_add_sgs(9), virtqueue_add_outbuf(9), virtqueue_add_outbuf_premapped(9), virtqueue_add_inbuf(9), virtqueue_add_inbuf_cache_clean(9), virtqueue_add_inbuf_ctx(9), virtqueue_add_inbuf_premapped(9), virtqueue_dma_dev(9), virtqueue_kick_prepare(9), virtqueue_kick(9), virtqueue_get_buf_ctx(9), virtqueue_disable_cb(9), virtqueue_enable_cb_prepare(9), virtqueue_poll(9), virtqueue_enable_cb(9), virtqueue_enable_cb_delayed(9), virtqueue_detach_unused_buf(9), vring_interrupt(9), virtqueue_resize(9), virtqueue_reset(9), virtqueue_get_vring_size(9), virtqueue_map_alloc_coherent(9), virtqueue_map_free_coherent(9), virtqueue_map_page_attrs(9), virtqueue_unmap_page_attrs(9), virtqueue_map_single_attrs(9), virtqueue_unmap_single_attrs(9), virtqueue_map_mapping_error(9), virtqueue_map_need_sync(9), virtqueue_map_sync_single_range_for_cpu(9), virtqueue_map_sync_single_range_for_device(9)

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and that's the page!! 🧚‍♀️ this iconic lil number lives over in ./drivers/virtio 🎀 and she was dated October 2026 ⭐ — so yeah, timestamped and stamped, virtqueue_notify(9) forever, periodt 💅💜